Finding the Fourth Proportional to 726,828.75, 1,003,013.56 and 404,538.93

Step by Step Solution

1. Step 1: Write the proportion equation
   726,828.75 : 1,003,013.56 = 404,538.93 : x
2. Step 2: Convert to fraction form
   726,828.75/1,003,013.56 = 404,538.93/x
3. Step 3: Cross multiply
   726,828.75x = 1,003,013.56 × 404,538.93
4. Step 4: Simplify right side
   726,828.75x = 405,758,032,337.89
5. Step 5: Solve for x
   x = 405,758,032,337.89/726,828.75
6. Step 6: Final answer
   x = 558,258.09